Furnace Sizing Calculator - Air Conditioning and Heating

For this example using an 80% efficient furnace the 1900 square foot home above would require a 90000 Btu input furnace that produces 72000 Btu's of heating which is close enough to the 76000 Btu's required using the climate heating factor.

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Energy Cost Savings Calculator for Commercial Boilers ...

Base model - Values represent a 1000000 Btu/hour gas-fired hot-water boiler operated for 1500 full-load hours per year with a thermal efficiency of 80%. The performance of this standard unit is based on ASHRAE 90.1-2007. Thermal efficiency (E t) - Represents a boiler's energy output divided by energy input as defined by ANSI Z21.13. A boiler's thermal efficiency rating should be used to ...

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Household Carbon Footprint Calculator | Greenhouse Gas ...

Sep 10 2020 · The quantity of greenhouse gases emitted from your furnace and boiler depends on the efficiency of these items the size and insulation of your house and the amount and type of fuel used. The quantity of emissions from your car or truck depends on how much you drive what your vehicle's fuel efficiency is and how you drive (e.g. the amount ...

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